The principle of distillation is very simple, that we prepared in the laboratory distilled water principle. Burn boiling sea water, fresh water for the steam evaporation, salt remain in the bottom of the pot and steam condensation for the distilled water, that is freshwater. This ancient method of desalination of sea water, consume a large amount of energy, resulting in a large number of pot dirt is difficult to mass production of fresh water. Modern multi-stage flash distillation desalination anxious to make the ancient distillation rejuvenated. Water under normal atmospheric pressure, heated to 100 ℃ was boiling into steam. If you enable a suitable heated water into the vacuum or near vacuum distillation unit, it will rapidly evaporate in an instant steam. Take advantage of this principle, made of multi-stage flash distillation desalination unit urgently. Such desalination plant can be made larger than the vacuum evaporation chamber can be made larger than, to link up as large-scale desalination plants. Such desalination plant, thermal power plant can be built together with the use of heat and power plant waste heat heating water. Hydropower generation, can significantly reduce production costs. The existing large-scale desalination plants, most of them opted for this method. If the solar evaporation desalination method can be put into practical, age-old distillation desalination technology has on an energy-efficient new level.

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